What is the ureter's role in the urinary system?

The ureter plays a crucial role in the urinary system by transporting urine from the kidneys to the urinary bladder. Once urine is produced in the kidneys through the filtration of blood, it enters the ureters, which are long, thin tubes that connect to the bladder. The peristaltic movement of the ureteral walls assists in pushing the urine downward towards the bladder. Understanding this function is important for comprehending how the urinary system operates as a whole, including the processes of urine formation, storage, and elimination. Other choices pertain to different functions not performed by the ureters, such as urine storage or filtration of blood, which are responsibilities of other structures in the urinary system.